Types of RadiationPrint
There are 3 types of ionising radiation that you need to be familiar with at Intermediate 2 Physics level.
Each of the ionising radiations can be defined in terms of their properties in the following areas:
|Radiation||Range in air||Ionising Power||Can pass through paper?||Can pass through 5mm of Aluminium?||Can pass through 5cm of Lead?||Magnetic field deflection|
|Alpha||5cm||Highly Ionising||No||No||No||Deflected towards negative plate|
|Beta||15cm||Ionising||Yes||No||No||Deflected toward positive plate|
|Gamma||Much further||Weakly ionising||Yes||Yes||Almost all of it is stopped, but some gets through.||None|
Each type of radiation is caused by a decay of one of two types:
Some atoms are unstable and in an attempt to stabilise the nucleus, the atoms' nucleus undergoes a change. This change may release a form of ionising radiation.
Atoms that do this are said to be radioactive.
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